Thin-wall ball bearing

By designing the inclined first contact part and the L-shaped second contact part on the outer ring of the thin-square ball bearing, combining the guide surface and the urging groove, the problem of large radial pressure torque of the dustproof cover in the prior art is solved, and more efficient pressing and more stable sealing are achieved.

CN222650394UActive Publication Date: 2025-03-21C&U CO LTD +2
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Patent Information

Application Number
CN202421636397.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-10
Publication Date
2025-03-21
Estimated Expiration
2034-07-10

AI Technical Summary

Technical Problem

During the radial pressing process of the dustproof cover, existing thin-square ball bearings need to apply a large pressure torque, which makes the outer ring prone to deform and it is difficult to ensure whether the dustproof cover is pressed in place.

Method used

A thin-square ball bearing is designed, and the outer ring is provided with an inclined first contact portion and an L-shaped second contact portion. By cooperating with the outer sealing groove and the inner sealing groove, contact sealing of the dust cover is realized, and the radial pressure-mounting torque is reduced through the guide surface and the urging groove.

Benefits of technology

By reducing the pressing distance and torque of the dustproof cover, the outer ring deformation is avoided, and the processing requirements of the outer sealing groove are simplified, thereby improving the pressing efficiency and sealing effect of the dustproof cover.

✦ Generated by Eureka AI based on patent content.
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Abstract

A thin-wall ball bearing comprises an outer ring, an inner ring and a dustproof cover, a roller path is arranged between the outer ring and the inner ring, outer sealing grooves matched with the dustproof cover to form sealing are formed in the positions, located on the two sides of the roller path, of the outer ring, the end, close to the outer sealing grooves, of the dustproof cover is a first contact part, and the first contact part is obliquely arranged before entering the roller path; the outer sealing groove is concavely arranged towards the outer diameter direction of the outer ring, a first contact point and a second contact point are formed at the two ends of the outer sealing groove, the outer sealing groove and the dustproof cover form contact sealing only through the first contact point and the second contact point, and the inclination angle of the first contact part is increased after the first contact part forms contact sealing with the first contact point and the second contact point. The utility model has the beneficial effects that the inner part of the concave outer sealing groove does not need to be processed at high precision, so that the processing difficulty and the production cost are reduced; meanwhile, due to the inclination angle of the first contact part, the press-fitting torque is reduced, and the outer ring is prevented from being deformed due to the fact that the outer ring bears too large press-fitting torque.
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